Stat > Regression > Nonlinear Regression > Catalog > Manage My Functions
Use to rename, assign a category, or delete custom functions in the catalog. Each time you perform nonlinear regression with a new custom function, Minitab adds the function to the catalog and assigns it a default name and category. Use the features in this dialog box to improve how the catalog displays and filters the custom functions.
Function: Select the function that you want to modify.
Rename: Enter the new name.
Change category: Choose the new category. You can filter the functions using these categories in the catalog.